Self Assessment SOS Whatever your question about filling in and filing your Self Assessment tax return by the 31st January deadline, we’ve got you covered.

Crucial last-minute tips for beating the Self Assessment deadline

We’re here to help. Time to roll your sleeves up, take a deep breath and make a start - here are some top tips to help you on your way.

Read the tips now!

Everything you need to beat the Self Assessment deadline

Common tax return mistakes

Make sure you avoid these common mistakes when filing your tax return!

Learn the lingo: Self Assessment terms explained

Discover the meaning of the key terms you'll come across when filling in and filing your Self Assessment tax return.

Know how long it will take your Self Assessment payment to reach HMRC

Check your Self Assessment payment will reach HMRC by midnight 31st Jan with this payment option guide

5 tax traps to avoid

Are you falling into one of these tax traps?

You might have a 'reasonable excuse' for not completing your tax return in time

HMRC does allow appeals against penalties for late returns, if there’s a 'reasonable excuse' - but what counts as a reasonable excuse?

UK Income Tax rates and bands 2017/18

More information about the tax you pay on any income received over and above your Personal Allowance.

Self Assessment filing in FreeAgent

Video: capital allowances explained by HMRC

If you have to declare capital allowances on your tax return, this webinar should come in very handy.

Important dates

Online tax return deadline

Midnight 31st Jan 2018

Tax year to file for

6 April 2016 to 5 April 2017

Final payment of any tax due

Midnight 31st Jan 2018 How to pay

Penalty for late filing

£100 if you file up to 3 months late

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